JPS6331055A - Double deck type recording and reproducing device - Google Patents

Abstract

PURPOSE:To attain the selective changing-over to the normal travelling and the reverse travelling of the tape of respective tape cassetts loaded at a pair of decks to which a rotating body rotated only at the time of the changing-over is arranged, between a pair of a changing-over means. CONSTITUTION:When one rotating body 37 is rotated at the time of the changing-over to a normal travelling and reverse travelling, a pair of changing- over means 80 and 81 are simultaneously driven by a pair of driving means 78 and 89 provided at the rotating body and the travelling of the tape of respective tape cassettes loaded to a pair of decks is selectively changed over to the normal travelling and the reverse travelling. Thus, one rotating body 37 to drive the pair of the changing-over means 80 and 81 and one driving type to drive the rotating body are respectively sufficient. Consequently, the device can be made thinner and smaller, the number of parts can be decreased and the mechanism can be simplified.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a double deck type recording and reproducing apparatus having a pair of decks into which a pair of tape cassettes are mounted.

[Summary of the invention]

The present invention provides a double-deck type recording/reproducing device, in which a pair of tape cassettes attached to a pair of decks is run.
A pair of switching means for selectively switching between normal running and reverse running is provided, and the pair of switching means are configured to be driven simultaneously by a pair of driving means provided on the rotating body, and the switching means for the pair of switching means are configured to be simultaneously driven by a pair of driving means provided on the rotating body. This allows the pair of switching means to be driven at the same time, making it possible to simplify the mechanism by making the device thinner and smaller, and reducing the number of parts.

[Conventional technology]

Conventionally, a double deck type tape is constructed in which a pair of decks to which a pair of tape cassettes are attached are provided in parallel or back to back, and dubbing is possible between the pair of tape cassettes attached to these pair of decks. A recorder exists.

On the other hand, an example of a prior application for a tape recorder in which the tape running of a tape cassette mounted on a deck is selectively switched between normal running and reverse running is Japanese Patent Application No. 60-228189 filed by the present applicant. There is a tape recorder as described in the specification. This tape recorder is a single deck type having only one deck,
On the back side of the deck, a switching rod is provided that is moved between a normal switching position and a reverse switching position to selectively switch the running of the tape of the tape cassette mounted on the deck between normal running and reverse running. ing. The switching rod is configured to be driven by a drive pin integrally provided on a rotating body that rotates only when switching between normal and reverse modes.

[Problem that the invention seeks to solve]

In order to provide the above-mentioned double deck type tape recorder with a normal/reverse switching mechanism, the normal/reverse switching mechanism shown in the above-mentioned prior application example must be applied to the above-mentioned double deck type tape recorder. However, if this is simply applied, in order to switch between normal and reverse running of each tape cassette attached to a pair of decks, a pair of switching rods corresponding to each pair of decks will be required, and Accordingly, a pair of rotating bodies for driving the switching rod and a drive system for driving the rotating bodies are also required.

However, if a pair of members for normal and reverse switching is provided, the thickness of the tape recorder becomes considerably thick, and the number of parts increases and the mechanism becomes complicated.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a double deck type recording/reproducing apparatus in which a pair of switching means corresponding to a pair of decks can be driven by one rotating body.

[Means for solving problems]

The present invention is provided with a pair of decks on which a pair of tape cassettes are mounted, and is moved between a normal switching position and a reverse switching position so that the running of the tape of the tape cassette mounted on the pair of decks is changed from normal running to normal running. A pair of switching means for selectively switching between reverse running and reverse running is provided, and a rotary body that is rotated only when switching between normal running and reverse running is disposed between the pair of switching means, and the rotating body is provided with a A pair of driving means for simultaneously driving the switching means is provided, and the pair of switching means are simultaneously driven by one of the rotating bodies.

[Effect]

According to the present invention, when one rotary body is rotated when switching between normal running and reverse running, the pair of switching means are simultaneously driven by the pair of driving means provided on the rotating body, and the pair of switching means is driven simultaneously to the pair of decks. The tape running of each mounted tape cassette is selectively switched between normal running and reverse running.

〔Example〕

An embodiment in which the present invention is applied to a double deck tape recorder having an auto-reverse mechanism will be described below with reference to the drawings.

First, the outline of this double-deck tape recorder will be explained with reference to FIGS. 1 to 5.

As shown in FIGS. 1 and 2, the double deck tape recorder 1 has a pair of decks 2.3 on which tape cassettes 90 are mounted, and these decks 2.3 are installed back to back. It is being For Detsuki 2.3,
Each pair of reel stands 4a to 4d provided with reel stand gears 6a and 6d, each pair of capstans 83 to 8d, each pair of pinch rollers 10.11, magnetic head 12, etc. are arranged, and the chassis 13 is provided with a record button 14, playback buttons 15, 16, stop S port 17, fast forward button 18, rewind button 19, long play operation knob 20, etc.

Between decks 2 and 3, as shown in Figures 3 to 5,
A flat and thin motor 21 is attached to the deck 2 on the same axis as the reel stand 4b on the deck 2 side.

A capstan pulley 22, which also serves as a capstan flywheel, in which each pair of capstans 8as8c, 8b, and 8d protruding from 2.3 is provided on the same axis.
23, intermediate pulley 24 provided at approximately the middle position of cap stanbu I722.23, cap stanbu 1J2
A reversing pulley 25 and the like provided on the side of 3 are arranged. An elastic belt 27 is wound between each of these pulleys 22, 23, 24, 25 and a drive pulley 26 of the motor 21.

The intermediate pulley 24 includes an FR drive gear 28 that is engaged with a fast forwarding and rewinding gear (not shown), and a drive gear 41 that is always engaged with an intermediate gear 42 that is integrally provided with a drive gear 38. , and a pair of NR drive gears 39, 40 respectively protruding from the deck 2.3. The deck 2.3 is provided with NR file gears 35.36 for normal running and reverse running of the magnetic tape 5, and intermediate gears 331.34.

When a pair of tape cassettes 90 are selectively or simultaneously loaded onto the decks 2.3 of the double deck type tape recorder 1 configured as described above, the pair of reel hubs 91 of the tape cassettes 90 are attached to the reel stands 4a to 4d. When engaged, the magnetic tape 5 is hooked onto the capstans 8a (8c) and 8b (8d) as shown in FIG.

Next, when the record button 14 or play button 15 or 16 is pressed,
A power switch (not shown) is turned on, the motor 21 is rotated at a constant speed, the drive pulley 26 is rotationally driven, and the belt 27 is rotated.
By intermediate pulley 24, capstan pulley 22.2
3. The reversing boolean IJ25 is driven to rotate. As shown in FIG. 4, the NR file gear 35 (36), which is always in mesh with the NR drive gear 39 (40) which is rotated integrally with the intermediate boob IJ24, is operated by the normal/reverse switching device 45, which will be described later. , one reel stand 4b
(4d) is selectively engaged with the reel base gear 6b (6d). At the same time, a head support mechanism (not shown)
The magnetic head 12 is brought into contact with the magnetic tape 5, and the pinch roller 11 is pressed against one of the capstans 8b (8d) to cause the magnetic tape 5 to run normally, and the magnetic head 12 to perform normal recording or reproduction. be exposed.

Next, when the normal running of the magnetic tape 5 reaches the end of the tape, the drive gear 38, which is constantly rotationally driven together with the intermediate gear 42 by the drive gear 41, is activated by the operation of the trigger mechanism 47, which will be described later. The partially toothed gear 37 is selectively engaged and driven half a rotation. Missing tooth gear 3
7 drives the normal/reverse switching device 45 and switches to reverse travel. As a result of this switching, the NR file gear 35 (36) is moved as shown by the dashed line in FIG.
) is pressed against the pinch roller 10. As a result, the other reel stand 4a (4c) is rotationally driven, the magnetic tape 5 is run in reverse, and the magnetic tape 12 performs reverse recording or reproduction.

Next, when the stop button 17 is pressed, the power switch is turned off and the rotation of the motor 21 is stopped, and the NR file gear 35 (36) is returned to the neutral position to enter the stop mode.

By the way, this double deck type tape recorder 1 is configured so that dubbing can be performed between a pair of tape cassettes 90 respectively mounted on the decks 2 and 3.

Also, when the magnetic tape 5 reaches the tape end during reverse running, a shaft-off mechanism 48 (described later)
) is configured to perform an off operation and automatically enter a stop mode.

Furthermore, a long play operation means 5o is provided which can automatically perform normal and reverse playback (recording) on deck 3 following normal and reverse playback (recording) on deck 2.

Next, details of the normal/reverse switching device 45 will be explained with reference to FIGS. 5 to 12B.

First, as shown in Figures 6A and 6B, deck 2.3
A pair of operating rods 29. are used to switch the pair of tape cassettes 9° mounted on the tape cassettes 9 to the stop state and the play state.
30, one end of which is fixed to each playback button 15.16, and the other end connected to a pair of connecting levers 55.5 via a pin 54.
6. The pair of operating rods 29 and 30 are configured to reciprocate in the direction of the arrow asb in FIGS. 6A and 6B by having their guide holes 31 guided by guide pins 7 provided on the chassis 13. It is biased backward in the direction of arrow a by biasing means (not shown). Further, the connecting levers 55, 56 are connected by the shafts 9 provided in the chassis 3, and the connecting levers 55, 56 are connected to
It is pivoted so that it can rotate freely in the direction, and a pin 5 is attached to its free end.
1 is provided. And the connecting levers 55 and 56 are
Due to the return spring 58 stretched between the chassis 13,
It is urged to rotate in the direction of arrow d.

Next, on the back side of the deck 2.3, there is a pair of drive rods 60.
61 are arranged. The drive rods 60 and 61 are configured to be able to reciprocate in the directions of arrows e and f by having their elongated holes 52 guided by the rotation shaft 43 of the drive gear 38 or the guide shaft 44 provided in the chassis 13. There is.

The pins 51 of the connecting lever 55.56 are engaged with a U groove 63 formed at one end of the drive rod 60.61, and a tension spring 6 is inserted between these pins 51 and the drive rod 60.61.
4 is hung. Also, the other end side 6 of the drive rod 60.61
0a and 61a are formed almost symmetrically on the left and right sides, and a pair of left and right regulating portions 66 and 67 made of projecting pieces are provided on both sides of the cutout portions 65 formed on the other end sides 60a and 61a. . A shaft 68 is crimped at the center of the other end sides 60a, 61a of the N-moving rods 60, 61, and a linear spring 69 having a substantially U-shape is attached to the shaft 68. This spring 69 has both ends 69a, 6
The central portion 69c is fitted onto the shaft 68 so that the portion 9b protrudes toward the notch 65, and is configured to be swingable in the directions of arrows g and h.

Note that a pair of pinch rollers 10.11 provided on the deck 2.3 are driven at the ends of the other end sides 60a and 61a of the drive rods 60.61, and the pinch rollers 10.
, 11 are selectively crimped onto the capstans 83-8d.

Next, a pair of switching levers 72 and 73 are provided at intermediate positions between the pair of reel stands 6a and 6b and between 6c and 6d of the deck 2.3, respectively. This switching lever 72.73 is configured to be able to swing freely in the directions of arrows i and j on the outer periphery of the NR drive gear 39.40.
NR file gears 35 and 36, which are always in mesh with the drive gears 39 and 40, are each rotatably supported, and at the other end there are pressed parts 75 each consisting of a protruding piece, and pressed parts 75 arranged on both sides thereof. A pair of left and right regulated parts 76 and 77
is formed. Both ends 69a and 69b of the spring 69 are arranged on both sides of the pressed portion 75.

In addition, the above operating rod 29.30, connection lever 55.56
, a pair of switching mechanisms are formed by drive rods 60.61 and switching levers 72.73 to respectively switch a pair of tape cassettes 90 mounted on a pair of decks 2.3 from a stop state to a play state.

Next, on the back side of the deck 2.3, there is a pair of tape cassettes 90 that are moved between the normal switching position and the reverse switching position to switch the running of the tape cassette 90 attached to the deck 2.3 between normal running and reverse running. Switching rods 80, 81 are provided. This pair of switching rods 80.81 is arranged substantially perpendicular to the pair of drive rods 60.61 described above, and the bearing portions 32 of the capstans 8a to 8d provided on both upper and lower surfaces of the capstan pulley 22.23. By guiding the elongated hole 82, reciprocating motion is performed in the N direction as indicated by the arrow between the normal switching position shown in FIGS. 6A and 6B and the reverse switching position shown in FIGS. 8A and 8B. is configured to do so.

A spring pressing portion 85 consisting of a protrusion is provided approximately at the center of the switching rod 80.81, and this spring pressing portion 85 is inserted between both ends 69a, 69b of the spring 69. In addition, a partially toothed gear 3 is provided at one end of the switching rod 80.81.
A protrusion 86 extending toward the 7 side is provided, and this protrusion 86
A pair of drive pins 88 and 89 protrude from both upper and lower surfaces of the partially toothed gear 37 through cam holes 83 and 84 formed in the rollers 78.
．． 79 is engaged. A pair of pins 91.92 for selectively switching the pressing of the pinch rollers 10.11 to the capstans 8a to 8d are fixed to the switching rods so and si so as to protrude above the deck 2.3. There is.

A cam portion 94 for rotationally driving a shaft off lever 100, which will be described later, is formed at the end of the protrusion 86 of the switching rod 80 provided on the deck 2 side. Additionally, a cam member 95 is attached to the end of the protrusion 86 of the switching rod 81 provided on the deck 3 side.

The cam member 95 is configured such that its two guide holes 96 are guided by a pair of guide pins 87 that are integrally provided on the switching rod 81, so that it can slide in the directions of arrows m and n in FIG. 6B. has been done.

This cam member 95 has a shaft off lever 10.
1, and an engaging portion 98 that engages with a regulating portion 141 of a long play operation rod 140, which will be described later.
A spring attachment portion 99 is integrally provided, and a tension spring 53 is attached between the spring attachment portion 99 and the switching rod 81.

Next, between the pair of switching rods 81, 82, one partially toothed gear 37, which is a rotating body, is arranged to simultaneously drive the pair of switching rods 81, 82.

The partially toothed gear 37 is rotatably attached to the chassis 13 via a shaft 46, and is configured to be selectively engaged with the drive gear 38 and rotated. As shown in FIGS. 5 and 13, this partially toothed gear 37 is formed with a pair of partially toothed portions 120 and 121 that are offset by 180 degrees from each other. A pair of drive bins 8B and 89 are provided as drive means for simultaneously driving a pair of switching rods 80.81, and these drive bins 88.89 have cam holes 83.84 of a pair of switching rods 80.81. Rollers 78,79 are mounted which roll along the periphery of the.

On one side of the partially toothed gear 37, a lock pawl 111 of a trigger lever 110 and a shaft off lever 100. A pair of engagement convex portions 1 with which the engagement claw portions 102 of '101 are selectively engaged.
22.123 and the bending arm part 1 of the trigger lever 11O
A pair of protrusions 124 and 125 that selectively abut on 12 are integrally provided.

Next, as shown in FIGS. 6A and 6B, a trigger lever 110 is attached to the side of the partially toothed gear 37 so as to be rotatable in the direction of arrow 01p by a shaft 113 provided on the chassis 13. And this trigger lever 110
is biased forward in the direction of arrow 0 by a spring 114 stretched between it and the chassis 13. Trigger lever 110
A movable iron core 115 is swingably attached to one end of the movable iron core 115, and the chassis 13 attracts the movable iron core 115 to hold the trigger lever 110 in a double-motion state rotated in the direction of arrow P. A solenoid 118 is arranged.

Next, the operation of the normal/reverse switching device 45 configured as described above will be explained.

First, playback buttons 15 and 16 are pressed selectively or simultaneously during dubbing to switch the deck 2.3 from the stop mode shown in Figures 6A and 6B to the play (recording or playback) mode. When the operating lever 29.30 is moved forward in the direction of the arrow in FIGS. 6A and 6B, the connecting lever 55.56 is moved through the pin 54 of the connecting lever 55.56.
Rotate in the direction of arrow C.

By rotating the connecting lever 55, 56 in the direction of arrow C, the drive rod 60, 61 is moved forward in the direction of arrow e by the tension spring 64 (see FIGS. 7A, 9A, and 9B). Accordingly, the restriction of the restricted portion 76.77 of the switching lever 72.73 by the restriction portion 66.67 of the drive rod 60.61 is released, and the switching levers 72, 73 can rotate in the directions of arrows i and j. It becomes a state. At this time, the switching rods 80 and 81 are as shown in Fig. 7A.
In the normal switching position shown in Figure 10B, the switching rod 8
One end 6 of the spring 69 is
Since the switch lever 9b is pressed from the inside to the outside, the switch lever 72.73 becomes rotatable, and at the same time the spring 69 is rotated in the direction of the arrow, and the switch lever 72.73 is rotated at the other end 69a.
Press the pressed portion 75 of 73 from the side to switch the switching lever 72
．． 73 in the direction of arrow i. And switching lever 7
The rotation in the direction of arrow i of 2.73 causes the NR file gears 35 and 36 to mesh with the reel base gears 6b and 6d, and the limiter spring function of the spring 69 causes the NR file gears 35 and 36 to mesh with the reel base gears 6b and 6d. 6d is crimped.

As a result, the rotation of the NR drive gear 39.40 is transmitted to the reel base gears 5b and 5d via the NR midle gear 35.36.
The reel stands 4b and 4d are rotationally driven, and the magnetic tape 5 is normally run.

Next, when the magnetic tape 5 reaches the tape end during normal running and this is detected by a detection means (not shown),
The solenoid 118 is momentarily energized and the movable iron core 115
The attraction is released, and the trigger lever 110 is rotated in the direction of arrow 0 by the spring 114. Along with this, the lock pawl 111 of the trigger lever 110 and the engagement convex portion 1 of the partially toothed gear 37
22 is released, and the trigger lever 110
The bent arm portion 112 contacts the protrusion 124 of the partially toothed gear 37 and presses it in the direction of the arrow r, applying an initial rotational force of the partially toothed gear 37 in the direction of the arrow r, thereby causing the partially toothed gear 37 to become a driving gear. 38 to engage. The drive gear 38 is connected to the intermediate pulley 24
The gear 37 is constantly rotated in the direction of the arrow S through the drive gear 41 and the intermediate gear 42 due to the rotation of the drive gear 38, so the partially toothed gear 37 meshed with the drive gear 38 is rotated in the direction of the arrow R. When the partially toothed gear 37 is rotated approximately 90 degrees, the locking convex portion 123 contacts and presses the bent arm portion 112 of the trigger lever 110.
is rotated in the direction of arrow p against the spring 114, and the movable iron core 115 is again attracted to the magnet 119 of the solenoid 118.

Thereafter, when the partially toothed gear 37 is continuously rotated in the direction of arrow r, the lock pawl 111 of the trigger lever 110 is engaged with the locking convex portion 123, as shown in FIG. 8A, and the partially toothed gear 37 is rotated.
is locked.

As the partially toothed gear 37 rotates in the direction of the arrow r, the rollers 78.79 of the pair of drive pins 88.89 provided on the upper and lower surfaces of the partially toothed gear 37 move into the cam hole of the switching rod 80.81. 83. It rolls along the periphery of 84, and this cam hole 8
3.84 and rollers 78.79, the switching rod 80.81 is simultaneously moved in the direction of the arrow from the normal switching position shown in Figures 7A and 10B to the reverse switching position shown in Figures 8A and 11B. will be moved.

As the switching rod 80.81 moves in the direction of the arrow, the spring pressing portion 85 of the switching rod 80.81 switches from a state of pressing one end 69b of the spring 69 to a state of pressing the other end 69a. It will be done. As a result, the spring 69 is swung in the direction of the arrow g, and one end 69b of the spring 69 is moved to the switching lever 7.
Press the pressed portion 75 of 2.73 from the other side and rotate the switching lever 72.73 in the direction of arrow j. Switching lever 7
2.73, the NR file gear 35.36 is disengaged from the reel stand gears 6b and 6d, and the NR file gear 35.36 is disengaged as shown in FIGS. 8A and 11B. are meshed with intermediate gears 33 and 34. At this time, the spring 69 exerts its limiter spring function and generates a pressure force, which causes the NR file gear 35.
36 is crimped onto the intermediate gear 33,34. And this time, the rotation of NR drive gear 39.40 is NR file gear 35
．． 36 and intermediate gears 33, 34 to the reel base gear 6.
a, 6c, the reel stands 4a, 4C are rotated, and the magnetic tape 5 is run in reverse.

Next, when the magnetic tape 5 reaches the end of the tape during reverse running, the partially toothed gear 37 is rotated in the direction of arrow r in the same manner as the switching operation from normal running to reverse running described above.
This rotation of the partially toothed gear 37 moves the switching rod 80.81 from the reverse switching position shown in FIGS. 8A and 11B to the 7A position.
Arrow to the normal switching position shown in Figure 10B! However, when switching from reverse running to normal running, the deck 2.3 is configured to be automatically switched to a stop mode by a shaft-off mechanism 48, which will be described later.

Although not shown, the double-deck tape recorder 1 is also provided with a switching mechanism for manually switching between normal and reverse modes. - According to the above-mentioned normal/reverse switching device 45, by providing a pair of drive pins 88, 89, which are a pair of drive means, on the partially toothed gear 37, which is one rotating body, the switching rods 80, 81, which are a pair of switching means, are provided. are configured to drive simultaneously. Therefore, there is no need to provide separate toothless gears 37 to drive the pair of switching rods 80, 81, and the motor 21 gear train 41, 42, 38, etc. for driving the toothless gears 37, etc. Since it is sufficient to provide one each of the drive system and trigger mechanism 47, the number of parts can be reduced and the mechanism can be simplified.

In addition, by configuring the pair of switching rods 80 and 81 to be driven simultaneously by one partially toothed gear 37, the deck 2.
When dubbing is performed between a pair of tape cassettes 90 respectively attached to tape cassettes 3, if the lengths of the magnetic tapes 5 of the respective tape cassettes 90 are different, the tape end of one tape cassette 90 may cause the tape end of the other tape cassette 90 to overlap.
Even if it is not the end of the tape, switching between normal running and reverse running, or the shaft-off operation described below will be performed simultaneously on deck 2.3, but except for this point, deck 2.3 can be used alone or as described below. During long plays, it is no different from driving the pair of switching rods 80 and 81 with separate drive systems.

Next, details of the shaft-off mechanism 48 will be explained.

Deck 2.3 has operating rod 29.30 or fast forward,
A pair of locking plates 130 and 131 are provided for locking a rewinding lever (not shown) or the like in its forward position. The reason why the two lock plates 130 and 131 are configured in this way is that when dubbing or during long play (described later), each operating lever corresponding to the deck 2 side and each operating lever corresponding to the deck 3 side can be This is because it is necessary to lock or unlock them separately.

These pair of lock plates 130, 131 are connected to the chassis 13.
The guide hole 132 is guided by a shaft 59 provided in the shaft 59, so that the guide hole 132 is slidable in the directions of arrows t and u in FIGS. 6A and 6B. It is biased backward in the direction of arrow U by a spring 133. The lock plate 130.131 has an operating rod 29.30.
A lock pawl 134 that is engaged with the lock protrusion 57 and a pressed portion 135 are integrally provided.

Next, a pair of shaft-off levers 100, 101 corresponding to the lock plates 130, 131, respectively, are arranged at substantially intermediate positions between the lock plates 130, 131 and the partially toothed gear 37. This pair of shaft off levers 100.101
are coaxially supported on a shaft 109 provided on the chassis 13 so as to be rotatable in the directions of arrows V and W, respectively. These shaft-off levers 100 and 101 are biased back in the direction of arrow V by a return spring 108.

As shown in FIG. 13, the shaft-off levers 100, 101 include an engaging claw portion 102 that selectively engages with the engaging convex portion 122, 123 of the partially toothed gear 37, and a lock plate 130.1.
Pressing part 10 that acts on 31 to perform a shaft-off operation
3 and sliding contact portions 104 that slide into cam portions 94 and 97 of the cam member 95 of the switching rod 80 or the switching rod 81, respectively. The pressing portion 103 of the shaft off lever 100 is configured to press a pressed portion 135 of the lock plate 130 and a pressed portion 145 of a long play operating rod 140 (described later), and the pressing portion 103 of the shaft off lever 101 is configured to press the pressed portion 135 of the lock plate 131.

Next, the operation of the shaft-off mechanism 48 configured as described above will be explained.

First, when the regeneration button 15.16 is pressed selectively or simultaneously from the stop mode shown in FIGS. 6A and 6B, the operating rod 29.30 is moved forward in the direction of the arrow, and its locking protrusion 57 is engaged with the lock pawl 134 of the lock plate 130, 131, and the deck 2.3 is switched to the play mode. Then, when switched to play mode, switch lever 8
0 and 81 are in the normal switching position 1 shown in FIGS. 7A and 10B, the magnetic tape 5 runs normally. In this normal driving mode, the shaft off levers 100 and 101 are operated as shown in FIGS. 7A and 10B.
It is moved back in the direction of arrow V by the return spring 108, and the engaging claw portion 102 is released from the rotation area of the engaging convex portions 122, 123 of the partially toothed gear 37.

Next, it becomes the tape end of normal running and gear with missing teeth 37
When the switch is rotated in the direction of arrow r, the switching rod 80.81 moves to the eighth position.
It is moved in the direction of the arrow to the reverse switching position shown in Figures A and 11B, and is switched to reverse travel mode. When the switching rod 80.81 moves in the direction of the arrow, the sliding portion 104 of the shaft off lever 100.101 moves against the switching rod 8.
0 cam part 94, cam member 9 attached to the switching rod 81
The shaft-off levers 100 and 101 are gradually rotated in the direction of the arrow W. This rotation of the shaft-off lever 100.101 occurs after the engagement convex portion 123 of the partially toothed gear 37 passes the side of the engagement claw portion 102 of the shaft-off lever 100.101.
The engagement claw portion 102 is the engagement convex portion 122.12 of the partially toothed gear 37.
The timing is such that it is inserted within the rotation locus of No. 3. Then, the engagement convex portion 123 of the partially toothed gear 37 is engaged with the lock pawl 111 of the trigger lever 110, whereby the rotation of the partially toothed gear 37 is stopped, and the magnetic tape 5 is run in reverse.

Next, when the reverse running reaches the end of the tape, the partially toothed gear 37 is rotated again in the direction of arrow r. At this time, toothless gear 3
As shown in FIGS. 9A and 12B, the engagement protrusion 122 of No. 7 engages with the engagement claw portion 102 of the shaft-off lever 100.
Rotate the shaft off levers 100 and 101 in the direction of arrow W.

As the shaft-off levers 100 and 101 rotate in the direction of arrow W, the pressing portion 103 of the shaft-off lever 100 and 101 comes into contact with and presses the pressed portion 135 of the lock plate 130 and 131, and the lock plate 130 .131 and slide it in the direction of the arrow against the spring 133. By sliding the lock plates 130S and 131, the lock plate 1
30,131 and the locking protrusion 57 of the operating rod 29.30 are released, and the operating rod 29.30 is released.
is moved back in the direction of arrow a, and the shaft-off operation of deck 2.3 is performed.

Next, details of the long play operation means 50 will be explained. This long play operation means 50 automatically performs normal and reverse running of the tape end 1-90 mounted on deck 3 after normal and reverse running of the tape cassette 90 mounted on deck 2. It is.

First, as shown in FIGS. 6A and 6B, a long play operation lever 140 is fixed to the long play operation knob 20. This long-play operating rod 140 has a guide hole 142 guided by a shaft 59 provided in the chassis 13, so that the long-play operating rod 140 can be
It is provided so that it can be slid in any direction. One side of the long play operating rod 140 is selectively engaged with a bottle 128 installed in the chassis 13 to selectively position the long play operating rod 140 at a long play switching position and a long play release position. A wave-shaped recess 143 is formed. The long play operating rod 140 also includes a regulating pin 144 that restricts movement of the drive rod 61 corresponding to the deck 3 in the direction of arrow e, and a retaining portion 98 of the cam member 95 attached to the switching rod 81. A restricting portion 141 that selectively engages to restrict movement of the cam member 95 in the direction of arrow m.
A pressed portion 145 is provided which is selectively pressed by the pressing portion 103 of the shaft-off lever 100 to move the long play operating rod 140 in the direction of the arrow X.

On the other hand, a regulated portion 62 is formed in the driving rod 61 at a portion corresponding to the regulating pin 144 of the long play operating rod 140, and one end of the regulated portion 62 is formed as a part of the driving rod 61 as the driving rod 61 moves forward in the direction of the arrow e. A cam surface 107 is formed that slides on the outer periphery of the regulation bin 144 of the long play operating rod 140 and moves the long play operating rod 140 in the direction of arrow X.

Next, the long play operation means 5 configured as described above
The operation of 0 will be explained.

First, in the long play non-operation state in which the long play operating rod 140 is moved in the direction of the arrow X, the normal normal and reverse travel as described above and the subsequent shaft off operation are performed.

Next, when the long play operation knob 20 is switched and the long play operation rod 140 is moved in the direction of the arrow y, the long play operation state is entered. Then, when the regeneration phases 15, 16 are pressed together, the drive rod 60, 61 is moved by the operating rod 29, 30,
It is moved forward in the direction of arrow e via the connecting levers 55, 56 and the tension spring 64, but at this time, the drive rod 61 corresponding to the deck 3 is moved toward its regulated portion as shown in FIG. 7B. 62 is the regulation bin 14 of the long play operating rod 140
4, the movement in the direction of arrow e is restricted, and the switching mechanism 30.56.61.73 on the deck 3 side
is put into a paused state. In this pose state, Detsuki 3
There is no contact of the magnetic helad 12 to the magnetic tape 5 at the side and no pressure contact of the pinch rollers 10, 11 to the capstan 8C%8d.

On the other hand, the drive rod 60 corresponding to the deck 2 is connected to the regulation bin 14 of the long play operation rod 140, as shown in FIG. 7A.
4, the vehicle is moved forward in the direction of arrow e, and normal travel on the deck 2 side is started.

Next, when the normal running on the deck 2 side reaches the tape end, the partially toothed gear 37 is rotated, and the pair of drive bins 88, 89 of the partially toothed gear 37 are connected to the cam holes 8 of the pair of switching rods 80, 81.
3.84 and move the -pair switching rod 80.81 to the 8th
Move in the direction of the arrow to the reverse switching position shown in Figures A and 8B.

Along with this, the shaft-off lever 100 is rotated in the direction of arrow W by the cam portion 94 of the switching rod 80, and the engagement claw portion 102 of the shaft-off lever 100 engages the partially toothed gear 37 as shown in FIG. 8A. It is inserted into the rotation locus of the engagement convex portions 122 and 123.

On the other hand, the cam member 95 attached to the switching rod 81
As shown in Figure B, the restricting portion 141 of the long play operating rod 140 is engaged with the retaining portion 98 and movement in the direction of arrow m is restricted, so that the switching rod 81 is moved in the direction of the arrow. 6B against the tension spring 53.

Therefore, the cam portion 97 of the cam member 95 does not act on the shaft off lever 101, and the shaft off lever 101
As shown in FIG.
The engagement convex portions 122 and 123 are kept in a non-operating state in which they are removed from the rotation locus.

Next, when the reverse running on the deck 2 side reaches the end of the tape, the partially toothed gear 37 is rotated again. At this time, the engagement convex portion 122 of the partially toothed gear 37 is engaged with the engagement claw portion 102 of the shaft-off lever 100, as shown in FIG. 9A, and the shaft-off lever 100 is rotated in the direction of arrow W. As the shaft off lever 100 rotates, the pressing portion 103 of the shaft off lever 100 pushes the long play operating rod 14
Pressed part 145 of 0 and pressed part 1 of lock plate 130
35 are pressed one after another to drive the long play operating rod 140 and the lock plate 130 in the directions of the arrows x and , respectively.

Then, by moving the lock plate 130 in the direction of the arrow,
As shown in FIG. 9A, the lock pawl 134 of the lock plate 130
The locking protrusion 57 of the operating rod 29 is unlocked, and the shaft-off operation on the deck 2 side is performed. Also,
By moving the long play operating rod 140 in the direction of the arrow X, the long play operating means 50 becomes inactive, and the 9th B
As shown in the figure, the restriction on the movement of the drive rod 61 in the direction of the arrow e by the restriction pin 144 of the long play operation rod 140 is released, and the pose state on the deck 3 side is released. Note that this pause state is released as shown in FIGS. 14A to 14C. That is, as shown in FIG. 14A, first, from the pose state of the deck 3 in which the restricted portion 62 of the drive rod 61 is restricted by the restriction pin 144 of the long play operation rod 140, the long play operation is performed by rotating the shaft off lever 100. When the pressed portion 145 of the rod 140 is pressed by the pressing portion 103 of the shaft-off lever 100, the regulation pin 144 is moved together with the long play operating rod 140 to the position shown in FIG. 14B. And after that,
Due to the cam action of the cam surface 107 of the drive rod 61, which is moved forward in the direction of arrow e by the spring force of the tension spring 64, and the regulation pin 144 of the long play operation rod 140, the long play operation rod 140 is moved to the position shown in FIG. 14C. The configuration is such that the deck 3 side is moved further until the long play operation rod 140 is completely released from the paused state.

Next, as described above, the shaft on the deck 2 side is turned off and the pause state on the deck 3 side is released, so normal driving on the deck 3 side will be performed (first
(See Figures 0A and 10B).

When the normal running on the deck 3 side reaches the end of the tape, the partially toothed gear 37 is rotated and the pair of switching rods 80.8
1 is moved in the direction of the arrow from the normal switching position shown in FIGS. 10A and 10B to the reverse switching position shown in FIGS. 11A and 11B, thereby switching to the reverse driving mode. At this time, the regulating portion 14 of the long play operating rod 140
The restriction on the movement of the cam member 95 of the switching rod 81 in the direction of the arrow m by 1 is released by the rotation of the shaft-off lever 100, as shown in FIGS. 10A and 10B. , switching rod 8 by tension spring 53
Along with the movement in the direction of arrow 1, the object is moved in the direction of arrow m. As a result, the shaft off lever 101 is moved by the cam action of the cam portion 97 of the cam member 95 and the pressing portion 103 of the shaft off lever 101, as shown in FIGS.
As shown in the figure, the engaging claw portion 1 is rotated in the direction of arrow W.
02 is inserted into the rotation locus of the engagement convex portions 122 and 123 of the partially toothed gear 37.

Next, when the reverse running on the deck 3 side reaches the tape end, the partially toothed gear 37 is rotated, and as shown in FIGS. 12A and 12B,
As shown in the figure, the locking convex portion 122 engages with the locking convex portion 102 of the shaft-off levers 100, 101 to rotate the shaft-off levers 100, 101 in the direction of arrow W.

Then, as the shaft-off lever 101 rotates, its pressing portion 103 slides the lock plate 131 in the direction of the arrow, and releases the locking protrusion 57 of the operating rod 30 by the lock pawl 134 of the lock plate 131. , Detsuki 3
Perform side shaft off action.

According to the long play operation means 50 as described above, after the normal running and the subsequent reverse running of the tape cassette 90 mounted on the deck 2, the normal running and reverse running of the tape cassette 90 mounted on the deck 3 is automatically performed. The tape cassette 90 loaded on the deck 2.3 can be continuously played back or recorded.

Moreover, the release of the pose state on the deck 3 side, which is performed by sliding the long play operating rod 140 in the arrow X direction, is performed by pressing the pressed portion 145 of the long play operating rod 140 by the pressing portion 103 of the shaft off lever 100; Cam surface 10 of drive rod 61 using spring force of tension spring 64
Since it is configured to be performed by the cam action of 7,
Compared to the method of simply pressing the pressed portion 145 of the long-play operating rod 140 with the pressing portion 103 of the shut-off lever 100 and sliding the long-play operating rod 140, the burden placed on the partially toothed gear 37 for rotating the shaft-off lever 100 is reduced. can be reduced, and the gear with missing teeth 37 and its gear with missing teeth 3
The life of the motor 21 that drives the motor 7 can be extended.

Although one embodiment of the present invention has been described above, the present invention is not limited to the embodiment, and various effective changes can be made based on the technical idea of the present invention.

Further, the present invention is also applicable to a double deck type recording/reproducing device that does not have a reverse mechanism.

〔Effect of the invention〕

According to the present invention, the pair of switching means can selectively switch between normal running and reverse running of the tape in each tape cassette mounted on the pair of decks.

In addition, since the pair of switching means are configured to be driven simultaneously by the pair of driving means provided on the rotary body, the rotary body for driving the pair of switching means and the drive system for driving the rotary body are each driven separately. One at a time is enough. Therefore,
With the provision of a pair of switching means, there is no need to provide each pair of rotating bodies and drive systems for the rotating bodies that drive the pair of switching means, so the device can be made thinner and smaller. Moreover, the number of parts can be reduced and the mechanism can be simplified.

[Brief explanation of the drawing]

The drawings show an embodiment in which the present invention is applied to a double-deck tape recorder having an auto-reverse mechanism, in which FIG. 1 is an overall perspective view, FIG. 2 is a side view of the same, and FIG. FIG. 4 is a schematic diagram of the drive system, FIG. 5 is an exploded perspective view of the main parts, FIGS. 6A to 12B are plan views showing the operation of the main parts, and FIG. 13 is a partially toothed gear. 14A to 14C, which are exploded perspective views of the surrounding area, are plan views showing the relationship between the long play operating rod and the driving rod. In addition, in the symbols used in the drawings, 2.3. −〜−−−−−−−・−・・−Gear with missing teeth (
Rotating body) 80.81 -------- All switching rod (switching means) 88.89 - - Drive pin (driving means) 90 -------・－・－・－It is a tape cassette.

Claims (1)

[Scope of Claims] A pair of decks are provided on which a pair of tape cassettes are mounted, and the tape is moved between a normal switching position and a reverse switching position so that the running of the tape of the tape cassette mounted on the pair of decks is normal. A pair of switching means for selectively switching between running and reverse running is provided, a rotating body that is rotated only when switching between normal running and reverse running is disposed between the pair of switching means, and the rotating body has the A double-deck recording and reproducing apparatus, comprising: a pair of driving means for simultaneously driving a pair of switching means; and a single rotating body driving the pair of switching means simultaneously.